b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 01:00

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General

Target

b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
Size

41KB
MD5

84d27a2fdd5af86ddb930eea28d85f9a
SHA1

90f5fcad8e82af1d32299faee6903eb95bd321ea
SHA256

b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0
SHA512

b00c8763fc88284585980f0c44073d1967d6d668b9cceefca6da76978c794ed7b2081c0519c6117ff79a889e987fd0af93efd3fd284af3b43f02b532a9e0e745
SSDEEP

768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATNyHF/MF/6m0m+s2BGUGEgZg0hI44ec:CTW7JJZENTNyl2Sm0mKRgZg0C44enYE0

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5128) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3680-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00090000000233af-2.dat	upx
behavioral2/files/0x00040000000228de-6.dat	upx
behavioral2/memory/3680-889-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\rsod\osmux.x-none.msi.16.x-none.boot.tree.dat.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\PresentationUI.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\jsse.jar.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\ffjcext.zip.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00A1-0409-1000-0000000FF1CE.xml.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\CASHREG.WAV.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Windows.Controls.Ribbon.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\Microsoft.VisualBasic.Forms.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\pt-PT.pak.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql120.xsl.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-140.png.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\tipresx.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\SmallLogoDev.png.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalDemoR_BypassTrial180-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\msaddsr.dll.mui.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Expressions.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Violet.xml.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-pl.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_OEM_Perp-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019VL_MAK_AE-pl.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.Interfaces.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-conio-l1-1-0.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\sl-SI\tipresx.dll.mui.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\PresentationFramework.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\System.Windows.Forms.Primitives.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PG_INDEX.XML.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVOrchestration.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jre-1.8\bin\pack200.exe.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-math-l1-1-0.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jstack.exe.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription-pl.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial4-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Retail-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSZIP.DIC.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Primitives.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Input.Manipulations.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_OEM_Perp-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Templates\1033\RedAndBlackReport.dotx.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.Contracts.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jre-1.8\bin\klist.exe.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\WindowsBase.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ja.pak.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\WidevineCdm\_platform_specific\win_x64\widevinecdm.dll.sig.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-private-l1-1-0.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sl-si.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\PresentationFramework.resources.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jawt.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\policy\unlimited\local_policy.jar.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ul-oob.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-white_scale-80.png.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\SharedPerformance.man.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Web.HttpUtility.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\instrument.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-util-l1-1-0.dll.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-ppd.xrm-ms.tmp	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe

C:\Users\Admin\AppData\Local\Temp\b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe
"C:\Users\Admin\AppData\Local\Temp\b5bf4d51d3c605d19def296073c4816bb5185e37c396d5269157347c4477e6d0.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-2718105630-359604950-2820636825-1000\desktop.ini.tmp

Filesize
42KB

MD5
5a8889e53a7377fa9347460bb7730e38

SHA1
acd32fedd7be813124f22720ea7dd2eafedf2283

SHA256
81709f5c8bd0b7865e9c71ab44736051d49a3ef3933c8270e6b0eee285731b20

SHA512
9c29036a594dcc7525c1cec1d17326c69dd501be0dffd0997982aec2f88b19de90a8ceba248358a21bfb7086f5192823ddf35d326b390c5ef41c6ba1d87c2208

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp

Filesize
140KB

MD5
b1c1c44eb6ebca3600e325f6e2a197fd

SHA1
94ea5734283e78faf368f5fd007f4dceff3dbcc4

SHA256
d59f8ca82cce4a3ad3e2965573074a995cf9f7d92f81c23ed88bb3b574ca2682

SHA512
ff3eca466b34be45125067477679821d3ac06b6d5866169e7e434d1b91a4660769b91ec16aa65a9aa36731aae74edbf5403ca7f36ab400012c8c013665013596

Download Submit
memory/3680-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3680-889-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download